Protractor



FIG. 1 is a perspective view of a protractor according to the present invention;

FIG. 2 is a top view of the protractor of FIG. 1; and,

FIG. 3 is a bottom view, opposite the top view of FIG. 2, of the protractor of FIG. 1. 

The ornamental design for the protractor, as shown and described in the accompanying figures. 